Campoplex exareola, Han & Achterberg & Chen, 2021

Han, Yuan-Yuan, Achterberg, Kees Van & Chen, Xue-Xin, 2021, The genus Campoplex Gravenhorst, 1829 (Hymenoptera, Ichneumonidae, Campopleginae) from China, Zootaxa 5066 (1), pp. 1-121 : 43-44

Campoplex exareola sp. nov.

Figs. 27–28

Material examined. Holotype: female, Jilin, Changbaishan, 4.VIII.1994, Lou Juxian, No 951985 ( ZJUH).

Description. Female ( Fig. 27 ) holotype. Body length 4.5 mm, fore wing length 3.6 mm.

Head. Antenna with 24 flagellomeres; first flagellomere 1.25× longer than second flagellomere. Face ( Fig. 28E ) granulose. Clypeus ( Fig. 28E ) granulose, not convex, apical margin slightly arched and thick medially. Malar space granulose, 0.65× basal width of mandible. Mandible with a very weak lamella basally, upper tooth equal to the length of lower tooth. Frons granulose, median carina absent. Vertex granulose. Interocellar distance ( Fig. 28F ) 1.3× ocello-ocular distance and 1.5× distance between median and lateral ocelli. Temple granulose, subpolished, swollen behind eyes. Occipital carina evenly arched, reaching hypostomal carina slightly above mandible base.

Mesosoma. Pronotum granulose dorsally, subpolished, trans-striate below. Mesoscutum ( Fig. 28G ) granulose, notauli absent. Scutellum granulose with sparse and minute punctures. Metanotum granulose. Mesopleuron ( Fig. 28B ) granulose with sparse and minute punctures, weakly trans-striate below tegula, speculum smooth and shiny. Metapleuron ( Fig. 28B ) granulose. Propodeum ( Fig. 28C ) with area basalis triangular, long and narrow; area superomedia finely granulose, subpolished; area petiolaris weakly rugose; area superomedia confluent with area petiolaris, slightly depressed; costula absent; propodeal spiracle small and oval.

Wing. Fore wing ( Fig. 28A ) areolet absent. Marginal cell short, distal part of surrounding vein 2.0× longer than proximal one. Vein 1cu-a opposite M&RS. External angles of second discal cell acute (70°). Hind wing with nervellus slightly inclivous, intercepted at lower 0.25.

Legs. Hind femur 4.6× longer than wide. Inner spur of hind tibia 0.5× as long as first tarsomere of hind tarsus. Tarsal claws pectinate basally, teeth very weak.

Metasoma. First metasomal segment ( Fig. 28H ) round in cross-section of basal 0.3, without dorso-lateral carina and lateral groove. First tergite 2.5× longer than width of postpetiole. Second tergite 0.7× as long as first tergite, 1.1× longer than its apical width; thyridium oval, its distance from basal margin of tergite 1.5× its diameter. Third tergite 0.7× as long as its apical width. Sixth and seventh tergites without emarginations medially. Ovipositor sheath approx. 2.0× longer than hind femur, ovipositor ( Fig. 28D ) gradually upcurved.

Colour. Black. Mandible except teeth, palpi and tegula yellowish brown; scape and pedicel blackish brown; all trochantellus yellow; fore leg from trochantellus on yellowish brown, coxa, trochanter and telotarsus blackish brown; mid leg with extreme base of femur, tibia media-externally and basal 0.5 of tarsus yellow, remainder of mid leg brown; hind leg with base and middle of tibia and basal 0.5 of tarsus whitish yellow, remainder of hind leg black; metasoma entirely black.

Distribution. China (Jilin).

Comparative diagnosis. This species is similar to C. maurotrochanter sp. nov., but differs from the latter by having area petiolaris weakly rugose, propodeal median area slightly depressed, fore wing areolet absent, mid leg largely brown, and metasoma from third tergite on not compressed.

Etymology. Name derived from “ex-” (Latin for “out of”) and “areola” (Latin for “small open space”), because its fore wing is without areolet.

Figures

FIGURE 27. Campoplex exareola sp. nov., female, habitus.

FIGURE 28. Campoplex exareola sp. nov., female. A, fore wing; B, mesopleuron; C, propodeum; D, ovipositor; E, head, anterior view; F, head, dorsal view; G, mesoscutum; H, first metasomal segment.